Inside blind



5 Sheets-Sheet 1 F. KELLER. INSIDE BLIND.

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Patented May 12, 1885.

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INSIDE BLIND. No. 317,797. Patented May 12, 1885.

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INSIDE BLIND.

Patented May 12, 1885.

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(No Model.)

Patented May 12, 1885.

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P. KELLER.

INSIDE BLIND.

Patented May 12, 1885.

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UNITED STATES PATENT (lemon.

FRIEDRICH KELLER, OF MILWVAUKEE, VISOONSIN.

INSIDE BLIND.

SPECIFICATION forming part of Letters Patent No. 317,797, dated May 12, 1885.

Application filed May 19, 1884. (No model.)

To all whom it may concern:

Be it known that I, FRIEDRICH KELLER, of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Inside Blinds, &c. 3 and I do hereby declare thatthe following is a full, clear, and exact descrip tion thereof.

My invention relates to improvements in window-blinds; and it consists in peculiarities of construction, as will be fully described hereinafter.

In the drawings, Figure 1 is an elevation showing my improved blinds in position. Fig.2 is a similar view showing my invention applied to blinds having divided panels. Fig. 3 is a vertical cross-section of my blinds on line 00 cc of Fig. 1. Fig. 4c is a like view of part of the same on line 3 3 of said Fig. 1, showing the rollers and rail. Fig. 5 is a horizontal cross-section of part of the blind, showing the construction of the hinge in form of blind represented in Fig. 1. Fig. 6 is an ele vation of one of the rollers. Fig. 7 is a broken cross vertical section showing the ventilator. Fig. Sis a horizontal cross-section of the window-casing, showing the blinds partly withdrawn in the boxes and partly in position across the window. Fig. 9 is a perspective view showing the construction of the lower rail. Fig. 10 is a horizontal cross-section of the window-casing, showing the construction of the central rail of the divided blinds. Fig. 11 is a verticalsection of the same on line a a of Fig. 10. Fig. 12 is a cross-section'through the rollers of said central rail; and Fig. 13 is a cross-section through the window-sill, showing a modified construction of the lower rail.

The object of my invention is to construct inside blinds in a manner to have them entirely out of sight and inclosed when not in position for use. This has heretofore been attempted in different ways, none of which, however, as far as known to me, have ever come in favor, especially in wooden or brick veneered dwellings on account of the increased width required in the studding resulting in a consequent increase in the cost of building. As the application of my improved system is entirely free from that very objectionable feature, the slightincrease in the cost of my blinds over that of the ordinary folding inside blinds will be amply met by their greater con venience in handling as well as by their in creased durability and better appearance.

A A indicate the inner panels of my blinds, which I may construct either solid and continuous their whole height, as shown in Fig. 1, or centrally divided, as shown in Fig. 2, and to the outer edges of these panels A A are hinged the usual central panels, A A A A, all of which, as well as the former, may be either slatted or full, as desired. The central panels, as represented in Figs. 1, 2, and 8, are hinged to the inner panels in a particular manner, to be described hereinafter, so as to close in position across the window-panes on a vertical plane slightly inward from that of the inner panels, A A.

On each side of the window I propose to construct a casing or box, B B, wherein each half of the blinds may be rolled when not in use.

Rails A A" are fastened in the path of the blinds, one on the window-sill andthe other on the top frame-piece-the same to extend in the bottom and top of the casings or boxes B B. These rails A A have each an inner depression, a, whereon the central panels, A A A A are designed to slide freely. An other depression, a, is formed on the outer part of said rail and extends from the opposite end of the same to a point slightly beyond the hinging-line of the central panels. In this outer groove or depression thus formed runs each of the inner panels, A A, the motion of which is obviously limited by the raised central portion, a of the rail. These inner panels are provided in their lower edges with the rollers or pulleys cf a, fitted in suitable grooves on each side of the same. Their upper edges simply fit loosely in the depression a of the upper rail, A.

A strip, a, is fastened on the inner edge of the panels A, extending at right-angles inward, clear across the box B, which it closes when drawn out with the panels. The ends of these strips are suitably notched to clear the raised portion of the rails A A.

The outer edges of the panels A are depressed at suitable points to receive the hinge plates a, fastened thereon by the usual screws, and which are made long enough to reach just opposite the center of the inner depressions,

a, of the rails A A, where they form joints with the companion-plates a fastened in the suitably-notched edges of the central panels, A A A strip, a fastened on the outer edge of each of said panels, projects at right angles inward, so that its inner edge lies flush with that of the raised portion a" of the rail A3", against which raised portion a the lower edges of the panels A A rest when folded, and against which they slide when the blinds are pushed in the casings B and B.

Vhen what are known as divided blinds are preferred, as shown in Fig. 2, instead of constructing the inner panels, A A, in one single piece, I divide them into two panels. In this case, obviously, the number of rollers has to be doubled, one set to support the upper panels along the upper edge of a central rail, A which is supported across the center of the window and in the boxes B B. This rail, which may be either of wood or metal, is made square, but is fastened in place with its sides lying diagonally to the vertical plane of the blinds, its upper edge thus forming a rail for the grooved rollers or pulleys a a of the upper panels A A, and a rest or guide for the corresponding edges of the central panels, which are hinged to the former. The under edge of said rail serves also as a guide for the upper edge of the lower panels A A, which are grooved at a for that purpose.

The lower edges of the lower panels A are grooved to receive plain rollers a a and a rail, A, on the upper edge of which these rollers run is fastened, as hereinbefore described, in the window-sill and boxes B B, so as to lie in a line immediately opposite the central rail A A similar rail, A, designed to guide the upper edge of the upper panels A A, is also fastened into the top frame-piece in the same plane with the central and lower rails.

Whenever desired, in order to lessen the expense, instead of the described rails, A A", I may employ triangular rails, (preferably of metal,) such as areshown a'tA in Fig. 13,

v and when this is done the outer, lower, and

upper edges of the central panels, A A", are cut out at a as shown in Fig. 13, so as to allow them, when closed in position across the window-panes, to rest against the inner inclined face of the rails.

The central rail, A as well as the lower and upper rails, A" A", (or A A if that form of rail is used,) should be made in three parts. This is required to make their removal convenient .in case the window-sashes have to be taken off or when screens have to be mounted between the windows and the blinds. The box ends of the rail A are permanently fixed in the outer sides of the casings by means of screwbolts a passing horizontally through the center of the rail and clear across the boxes, in the inner sides of which their threaded ends screw. A bushing, a, may be inserted over the end of eachbolt, one end of said bushing resting in a suitable notch formed in the inner edge of the rail, while its other end is slightly embeddedintheboxside. Anotch,a ,formed in the end board of each ofthe boxes B and B receives each extreme end of the rail A which is thus firmly held in place. The other end of the box B section of the rail is cut bevel on all its sides, and. the corresponding end of the central part of said rail is also cut bevel, but in opposite direction, so as to'fit one over the other when the opposite end of the central part which is beveled downward and inward is brought against the upward beveled outer end of the box B section of said rail. A sliding key, a, actuated by means of the fingerpiece a, projecting out through a suitable slot of the rail, serves to lock the two beveled ends securely in place together, and when the blinds are brought in place across the window-panes, the central panels, A A stand exactly in the same vertical plane as the inner panels, A A, supporting them.

Studs a may be provided at suitable points of the central bar or rail, A these being intended to serve as stops to limit the motion of the inner upper panels, A A. I Similar studs may be formed either in the lower edge of said central rail, A or in the upper edge of the lower rail will serve the same purpose for the lower panels.

0 c are the slats which I propose to use in both forms of my improved blinds, and these slats form, in conjunction with the blind stiles and rails, the subject of a separate application for Letters Patent executed September 15, 1884..

In the upper rails of the panels A A in both of the forms shown, I propose to have the ventilation-openings 0 0 which will freely admit the outer air induced by the window-Ventilators D; These ventilators D may be made in any of the well-known forms, but preferably in the one shown in the drawings, and which will form part of the specification of another application to be filed.

I do not herein claim the specific details of the construction involved in Figs. 2, 10, 11, and 12, but reserve them as subjects of further application.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isg 1. In a window-blind structure, the combination, with the shutter-sections hinged to fold upon each otherin parallel planes, of the window-frame provided with a box in a plane parallel to the face of the window, and similar parallel rails supporting and guiding the top and bottom of the innermost of said sections, whereby, when the outer section is folded upon the inner, both may be slidinto the box, as set forth.

2. In a window-blind structure, the combination, with the shutter-sections hinged to fold upon each other in parallel planes, of the window-frame provided with a box in a plane parallel to the face of the window, and similar parallel rails supporting and guiding the IIO top and bottom of the innermost of said sections, and vertical filling-pieces attached to the edges of the panel to close the opening of the box when the panels are slid entirely out or in, as set forth.

3. In folding window-blinds, in combination with the panels A A, having rollers a a, and the window-casing having rails A A, the boxes B B, as set forth.

4. In folding window-blinds, in combination with the window-casing having boxes 13 B and rails A A, the blind-panels A A, having rollers a a, strips a and a and hinges a for central panels, A A A A as set forth.

FRIEDRICH KELLER.

Witnesses:

H. G. Unnnnwoon, E. G. ASMUS. 

